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/*! \internal \file
 * \brief
 * Implements gmx::test::PosixMemstream
 *
 * \ingroup module_testutils
 */
#include "gmxpre.h"

#include "testutils/posixmemstream.h"

#include <gtest/gtest.h>

#include "gromacs/utility/basedefinitions.h"

namespace gmx
{
namespace test
{

PosixMemstream::PosixMemstream()
{
#if HAVE_OPEN_MEMSTREAM
    stream_ = open_memstream(&buffer_, &bufferSize_);
#else
    GMX_UNUSED_VALUE(bufferSize_);
    stream_ = stdout;
#endif
}

PosixMemstream::~PosixMemstream()
{
    closeStream();
    if (buffer_)
    {
        free(buffer_);
    }
}

FILE* PosixMemstream::stream()
{
    return stream_;
}

void PosixMemstream::closeStream()
{
    if (isOpen_)
    {
#if HAVE_OPEN_MEMSTREAM
        fclose(stream());
#endif
        isOpen_ = false;
        stream_ = nullptr;
    }
}

bool PosixMemstream::canCheckBufferContents()
{
#if HAVE_OPEN_MEMSTREAM
    return true;
#else
    return false;
#endif
}

std::string PosixMemstream::toString()
{
    closeStream();
    return buffer_ ? std::string(buffer_) : std::string{};
}

} // namespace test
} // namespace gmx
